One engine manufacturer recommends heavy fuel oil should not be heated above 80℃ to 95℃ (176 ℉ TO 203℉) before purificationThis upper limit should be observed to ensure against（）
1、Most pump manufacturers recommended th
Most pump manufacturers recommended that the discharge piping for centrifugal pumps be （）.Aone size larger than the pump discharge nozzleBthe s...
2、A common rail engine has only one or t
A common rail engine has only one or two high pressure pumps in operation at the same（）time, and the injection into each cylinder.Acan’...
3、If a diesel engine fails to start，one
If a diesel engine fails to start，one of the likely causes is （）Alow compression temperatureBlow ambient air pressureChigh lube oil pump pressureDhigh fuel oil booster pump pressure
4、One cause of diesel engine surging can
One cause of diesel engine surging can be a result of （）Ainjection pump plungers stuck or wornBlow compressionCsolenoid stuck openDfuel tank too full
5、True heading differs from magnetic hea
True heading differs from magnetic heading by（）.AdeviationBvariationCcompass errorDnortherly error
6、One of function of diesel engine lubri
One of function of diesel engine lubricating oil is to （）Ainduce carbon formation on cylinder wallsBimprove fuel penetration in the combustion spaceCform a friction reducing film between mating surfacesDlubricate the fuel injectio